In the same directory, place this new tabs.css file. It's comprised of TabView's "Core CSS" and Matt Galvin's XP presentation rules.

In the example source, delete the reference to <link rel="stylesheet" type="text/css" href="http://yui.yahooapis.com/2.5.1/build/tabview/assets/skins/sam/tabview.css">; replace it with <link rel="stylesheet" type="text/css" href="tabs.css">, pointing at your new css file.

In the example source, change the CSS class name on the <body> element from yui-skin-sam to yui-skin-xp.

Grab the three custom images for the XP skin (1, 2, 3) and put them in the same directory.